ASoC: samsung dma - Don't indicate support for pause/resume.
[linux-2.6.git] / sound / soc / samsung / h1940_uda1380.c
1 /*
2  * h1940-uda1380.c  --  ALSA Soc Audio Layer
3  *
4  * Copyright (c) 2010 Arnaud Patard <arnaud.patard@rtp-net.org>
5  * Copyright (c) 2010 Vasily Khoruzhick <anarsoul@gmail.com>
6  *
7  * Based on version from Arnaud Patard <arnaud.patard@rtp-net.org>
8  *
9  * This program is free software; you can redistribute  it and/or modify it
10  * under  the terms of  the GNU General  Public License as published by the
11  * Free Software Foundation;  either version 2 of the  License, or (at your
12  * option) any later version.
13  *
14  */
15
16 #include <linux/types.h>
17 #include <linux/gpio.h>
18 #include <linux/module.h>
19
20 #include <sound/soc.h>
21 #include <sound/jack.h>
22
23 #include <plat/regs-iis.h>
24 #include <mach/h1940-latch.h>
25 #include <asm/mach-types.h>
26
27 #include "s3c24xx-i2s.h"
28
29 static unsigned int rates[] = {
30         11025,
31         22050,
32         44100,
33 };
34
35 static struct snd_pcm_hw_constraint_list hw_rates = {
36         .count = ARRAY_SIZE(rates),
37         .list = rates,
38         .mask = 0,
39 };
40
41 static struct snd_soc_jack hp_jack;
42
43 static struct snd_soc_jack_pin hp_jack_pins[] = {
44         {
45                 .pin    = "Headphone Jack",
46                 .mask   = SND_JACK_HEADPHONE,
47         },
48         {
49                 .pin    = "Speaker",
50                 .mask   = SND_JACK_HEADPHONE,
51                 .invert = 1,
52         },
53 };
54
55 static struct snd_soc_jack_gpio hp_jack_gpios[] = {
56         {
57                 .gpio                   = S3C2410_GPG(4),
58                 .name                   = "hp-gpio",
59                 .report                 = SND_JACK_HEADPHONE,
60                 .invert                 = 1,
61                 .debounce_time          = 200,
62         },
63 };
64
65 static int h1940_startup(struct snd_pcm_substream *substream)
66 {
67         struct snd_pcm_runtime *runtime = substream->runtime;
68
69         runtime->hw.rate_min = hw_rates.list[0];
70         runtime->hw.rate_max = hw_rates.list[hw_rates.count - 1];
71         runtime->hw.rates = SNDRV_PCM_RATE_KNOT;
72
73         return snd_pcm_hw_constraint_list(runtime, 0,
74                                         SNDRV_PCM_HW_PARAM_RATE,
75                                         &hw_rates);
76 }
77
78 static int h1940_hw_params(struct snd_pcm_substream *substream,
79                                 struct snd_pcm_hw_params *params)
80 {
81         struct snd_soc_pcm_runtime *rtd = substream->private_data;
82         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
83         struct snd_soc_dai *codec_dai = rtd->codec_dai;
84         int div;
85         int ret;
86         unsigned int rate = params_rate(params);
87
88         switch (rate) {
89         case 11025:
90         case 22050:
91         case 44100:
92                 div = s3c24xx_i2s_get_clockrate() / (384 * rate);
93                 if (s3c24xx_i2s_get_clockrate() % (384 * rate) > (192 * rate))
94                         div++;
95                 break;
96         default:
97                 dev_err(&rtd->dev, "%s: rate %d is not supported\n",
98                         __func__, rate);
99                 return -EINVAL;
100         }
101
102         /* set codec DAI configuration */
103         ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
104                 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
105         if (ret < 0)
106                 return ret;
107
108         /* set cpu DAI configuration */
109         ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
110                 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
111         if (ret < 0)
112                 return ret;
113
114         /* select clock source */
115         ret = snd_soc_dai_set_sysclk(cpu_dai, S3C24XX_CLKSRC_PCLK, rate,
116                         SND_SOC_CLOCK_OUT);
117         if (ret < 0)
118                 return ret;
119
120         /* set MCLK division for sample rate */
121         ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_MCLK,
122                 S3C2410_IISMOD_384FS);
123         if (ret < 0)
124                 return ret;
125
126         /* set BCLK division for sample rate */
127         ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_BCLK,
128                 S3C2410_IISMOD_32FS);
129         if (ret < 0)
130                 return ret;
131
132         /* set prescaler division for sample rate */
133         ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_PRESCALER,
134                 S3C24XX_PRESCALE(div, div));
135         if (ret < 0)
136                 return ret;
137
138         return 0;
139 }
140
141 static struct snd_soc_ops h1940_ops = {
142         .startup        = h1940_startup,
143         .hw_params      = h1940_hw_params,
144 };
145
146 static int h1940_spk_power(struct snd_soc_dapm_widget *w,
147                                 struct snd_kcontrol *kcontrol, int event)
148 {
149         if (SND_SOC_DAPM_EVENT_ON(event))
150                 gpio_set_value(H1940_LATCH_AUDIO_POWER, 1);
151         else
152                 gpio_set_value(H1940_LATCH_AUDIO_POWER, 0);
153
154         return 0;
155 }
156
157 /* h1940 machine dapm widgets */
158 static const struct snd_soc_dapm_widget uda1380_dapm_widgets[] = {
159         SND_SOC_DAPM_HP("Headphone Jack", NULL),
160         SND_SOC_DAPM_MIC("Mic Jack", NULL),
161         SND_SOC_DAPM_SPK("Speaker", h1940_spk_power),
162 };
163
164 /* h1940 machine audio_map */
165 static const struct snd_soc_dapm_route audio_map[] = {
166         /* headphone connected to VOUTLHP, VOUTRHP */
167         {"Headphone Jack", NULL, "VOUTLHP"},
168         {"Headphone Jack", NULL, "VOUTRHP"},
169
170         /* ext speaker connected to VOUTL, VOUTR  */
171         {"Speaker", NULL, "VOUTL"},
172         {"Speaker", NULL, "VOUTR"},
173
174         /* mic is connected to VINM */
175         {"VINM", NULL, "Mic Jack"},
176 };
177
178 static struct platform_device *s3c24xx_snd_device;
179
180 static int h1940_uda1380_init(struct snd_soc_pcm_runtime *rtd)
181 {
182         struct snd_soc_codec *codec = rtd->codec;
183         struct snd_soc_dapm_context *dapm = &codec->dapm;
184         int err;
185
186         snd_soc_dapm_enable_pin(dapm, "Headphone Jack");
187         snd_soc_dapm_enable_pin(dapm, "Speaker");
188         snd_soc_dapm_enable_pin(dapm, "Mic Jack");
189
190         snd_soc_jack_new(codec, "Headphone Jack", SND_JACK_HEADPHONE,
191                 &hp_jack);
192
193         snd_soc_jack_add_pins(&hp_jack, ARRAY_SIZE(hp_jack_pins),
194                 hp_jack_pins);
195
196         snd_soc_jack_add_gpios(&hp_jack, ARRAY_SIZE(hp_jack_gpios),
197                 hp_jack_gpios);
198
199         return 0;
200 }
201
202 /* s3c24xx digital audio interface glue - connects codec <--> CPU */
203 static struct snd_soc_dai_link h1940_uda1380_dai[] = {
204         {
205                 .name           = "uda1380",
206                 .stream_name    = "UDA1380 Duplex",
207                 .cpu_dai_name   = "s3c24xx-iis",
208                 .codec_dai_name = "uda1380-hifi",
209                 .init           = h1940_uda1380_init,
210                 .platform_name  = "samsung-audio",
211                 .codec_name     = "uda1380-codec.0-001a",
212                 .ops            = &h1940_ops,
213         },
214 };
215
216 static struct snd_soc_card h1940_asoc = {
217         .name = "h1940",
218         .owner = THIS_MODULE,
219         .dai_link = h1940_uda1380_dai,
220         .num_links = ARRAY_SIZE(h1940_uda1380_dai),
221
222         .dapm_widgets = uda1380_dapm_widgets,
223         .num_dapm_widgets = ARRAY_SIZE(uda1380_dapm_widgets),
224         .dapm_routes = audio_map,
225         .num_dapm_routes = ARRAY_SIZE(audio_map),
226 };
227
228 static int __init h1940_init(void)
229 {
230         int ret;
231
232         if (!machine_is_h1940())
233                 return -ENODEV;
234
235         /* configure some gpios */
236         ret = gpio_request(H1940_LATCH_AUDIO_POWER, "speaker-power");
237         if (ret)
238                 goto err_out;
239
240         ret = gpio_direction_output(H1940_LATCH_AUDIO_POWER, 0);
241         if (ret)
242                 goto err_gpio;
243
244         s3c24xx_snd_device = platform_device_alloc("soc-audio", -1);
245         if (!s3c24xx_snd_device) {
246                 ret = -ENOMEM;
247                 goto err_gpio;
248         }
249
250         platform_set_drvdata(s3c24xx_snd_device, &h1940_asoc);
251         ret = platform_device_add(s3c24xx_snd_device);
252
253         if (ret)
254                 goto err_plat;
255
256         return 0;
257
258 err_plat:
259         platform_device_put(s3c24xx_snd_device);
260 err_gpio:
261         gpio_free(H1940_LATCH_AUDIO_POWER);
262
263 err_out:
264         return ret;
265 }
266
267 static void __exit h1940_exit(void)
268 {
269         platform_device_unregister(s3c24xx_snd_device);
270         snd_soc_jack_free_gpios(&hp_jack, ARRAY_SIZE(hp_jack_gpios),
271                 hp_jack_gpios);
272         gpio_free(H1940_LATCH_AUDIO_POWER);
273 }
274
275 module_init(h1940_init);
276 module_exit(h1940_exit);
277
278 /* Module information */
279 MODULE_AUTHOR("Arnaud Patard, Vasily Khoruzhick");
280 MODULE_DESCRIPTION("ALSA SoC H1940");
281 MODULE_LICENSE("GPL");